Left paraduodenal internal hernia

Discussion:

The descending colon is anteriorly displaced (congenital failure of fusion), with resultant bowel herniation into this potential space named the "fossa of Landzert."

Additionally, some of the small bowel loops demonstrate severe wall thickening and abnormal enhancement pattern consistent with ischemia in the setting of elevated lactate.

At surgery, abnormal location of bowel was noted with the additional finding of twisting of the mesentery resulting in venous occlusion and bowel ischemia. After devolvulizing, the bowel was deemed viable and no bowel was resected. Additionally, congenital bands were seen near the ligament of Treitz, which were lysed. Postoperative course was uncomplicated.

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